CN108390536A - A kind of list cryostat superconducting linear motor - Google Patents
A kind of list cryostat superconducting linear motor Download PDFInfo
- Publication number
- CN108390536A CN108390536A CN201810223562.0A CN201810223562A CN108390536A CN 108390536 A CN108390536 A CN 108390536A CN 201810223562 A CN201810223562 A CN 201810223562A CN 108390536 A CN108390536 A CN 108390536A
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- China
- Prior art keywords
- stator
- mover
- winding
- linear motor
- cryostat
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K41/00—Propulsion systems in which a rigid body is moved along a path due to dynamo-electric interaction between the body and a magnetic field travelling along the path
- H02K41/02—Linear motors; Sectional motors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K55/00—Dynamo-electric machines having windings operating at cryogenic temperatures
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Electromagnetism (AREA)
- Linear Motors (AREA)
- Superconductive Dynamoelectric Machines (AREA)
Abstract
The invention discloses a kind of single cryostat superconducting linear motors.The motor is divided into three layers of upper, middle and lower, and centre is mover, and upper layer and lower layer is stator, and winding is distributed on stator.Winding is made of high temperature superconducting materia, including armature winding and Exciting Windings for Transverse Differential Protection.In order to realize the installation of armature winding and Exciting Windings for Transverse Differential Protection, stator is divide into upper part and lower part, armature winding is distributed in stator, and Exciting Windings for Transverse Differential Protection is distributed in lower stator, can be by Winding Design at racetrack for the ease of the installation of winding.Since stator is divide into upper part and lower part, so single cryostat design circularizes, and it is wrapped in stator up and down.Wehnelt electrode is added by way of opening wide tooth in upper and lower stator tooth boots, plays the role of modulation magnetic field up and down.The complete super motor of the present invention only needs the single cryostat of an annular, greatly reduces production cost, development prospect is more wide.
Description
Technical field
The present invention relates to medical electronic equipments, communications and transportation, and national defence, the fields such as business and household electrical appliance especially adapt to use
In a kind of single cryostat super linear motor entirely of MISSILE LAUNCHING and electromagnetic ejection system.
Background technology
Linear motor is a kind of transmission device directly converting electric energy to linear motion mechanical energy, has starting thrust
Greatly, the advantages that dynamic response is fast, and velocity and acceleration is big.Resistance is zero to superconductor at low temperature, and power attenuation is reduced to zero,
Solves the problems such as armature winding fever, temperature rises so that electric efficiency greatly improves；Due to superconducting line critical magnetic field strength and
Critical current density is all very high, and motor improves more than ten to the current density of the air gap flux density and winding that make superconducting motor than usual
Times, the power density of motor is greatly improved, the weight of motor, volume and spillage of material are reduced.
Superconductor has zero resistance effect, isotope effect, Meisser effect and Josephson effect etc..About zero
Electricresistance effect, at the beginning can this special entropy theory come to explain that metallic resistance continuously decreases when close to zero degree be zero, and Dewar
With platinum liquid warm area result of study then in contrast；Mid-term Ang Neisi participates in research, by studying metallic resistance under low temperature
Variation realizes the liquefaction of helium and can reach the very low temperature region of 4K to 1K, subsequently uses mercury as research object, find it in 4.2K
Near, the resistance of mercury has fallen to the state being unable to measure, this is that people have found superconducting state for the first time；Later, method was difficult to understand
(J.File) and Mai Aosi (R.G.Mils) measures the magnetic field that supercurrent generates to study spiral shell using accurate magnetic nuclear resonance method
The decay of supercurrent in spool, the result is that die-away time, not less than 100,000 years, thus zero resistance effect is determined.
Invention content
Present disclosure is to propose that a kind of single cryogenic magnetic field modulation system surpasses entirely to optimize the performance of complete super linear motor
Linear motor.
The technical solution adopted by the present invention is：
A kind of list cryostat superconducting linear motor, which is characterized in that including upper and lower two stators (2) (3), one dynamic
Sub (1), two groups of windings (4) (5), a single cryostat；
The stator is divided into two parts, upper stator (2) and lower stator (3), and upper stator (2) and lower stator (3) are all three-phase
12 poles and per extremely corresponding, mover number is 10；The armature winding (4) is distributed in stator (2), the Exciting Windings for Transverse Differential Protection (5) point
Cloth is wound in lower stator (3), two groups of windings for racetrack, and adjacent phase-coils interval electrical angle formula is θ=(2 π Nr)/Ns+ π,
Middle rotor number of poles Nr=10, stator poles Ns=12 event θ=120 °；The armature winding (4) and Exciting Windings for Transverse Differential Protection (5) are all high temperature
Superconductor；Exciting Windings for Transverse Differential Protection is passed through constant exciting current in (5)；The retainer is wrapped in stator up and down, therefore designs cyclization
Shape.
Further, the linear motor for being 11,13,14 compared to mover number, in rotating speed phase simultaneously as high electricity frequency, iron loss
Servo-actuated subnumber increases and increases, so the 10 mover number linear motors that selection is minimum.
Further, the ratio of mover bottom and mover pole span is 0.7, and the ratio of bottom and mover pole span is 0.67 on mover.
Further, add Wehnelt electrode (6), i.e., thicken the upper stator (2) and lower stator (3) tooth boots, by
The sulculus that certain depth is opened on tooth boots, forms the wide small tooth being equally spaced, these teeth act as the work of adjustable magnetic ring in magnetic gear
With, therefore referred to as Wehnelt electrode.
Further, armature and Exciting Windings for Transverse Differential Protection are racetrack, and the material used in two kinds of windings be y ba cu o compound or
Bi-2223。
Further, single cryostat uses Dewar.
The present invention has the following effects that：
1. the stator up and down in the present invention is all salient-pole structure, electric machine structure is simply easily achieved, and is reduced high speed and transported
The incidence of temperature and machinery etc. failure when row.
2. the present invention by stator by being divided into two parts up and down, armature winding and Exciting Windings for Transverse Differential Protection are respectively distributed to fixed up and down
Son takes full advantage of groove area.
3. each upper and lower stator tooth has a winding package, and is three-phase windings, and on mover iron plate both without winding or
There is no permanent magnet, fundamentally eliminating mover failure, fault freedom also has big promotion, has in highly reliable field great
Using.
4. the Exciting Windings for Transverse Differential Protection on stator salient poles tooth is passed through correct exciting current instantly, the electric angle of mover increase from 0 ° to
At 180 °, positive and negative switching can be occurred by exchanging the magnetic flux of armature winding so that motor has higher power density and efficiency.
5. exchange armature winding and DC excitation winding are all distributed on stator, as long as a ring type list low temperature is kept in this way
Device can reach the low-temperature characteristics of superconductor in complete super linear motor.
6. by way of opening wide small tooth as Wehnelt electrode in upper and lower stator tooth boots, stator field up and down, modulation are modulated
Pole by internal stator excitation winding be powered generate the high rotating speed magnetic field modulation of low number of pole-pairs, in the air gap of upper layer generate can with it is outer
The coefficient high number of pole-pairs slow-speed of revolution harmonic field of stator, to achieve the purpose that low speed high torque.
Description of the drawings
Fig. 1 is structure of the invention schematic diagram, in figure：1. mover；Stator on 2.；3. lower stator；4. armature winding；5. excitation around
Group；6. Wehnelt electrode；
Fig. 2 is that single cryostat is radially schemed；
Fig. 3 is that upper stator AC superconductive armature winding stacks mode；
Fig. 4 is that lower stator DC superconduction Exciting Windings for Transverse Differential Protection stacks mode；
Fig. 5 be mover electric angle be 0 ° when armature winding in magnetic linkage；A is the magnetic linkage of A1 phases, and b is the magnetic linkage of A2 phases；
Fig. 6 be mover electric angle be 90 ° when armature winding in magnetic linkage；A is the magnetic linkage of A1 phases, and b is the magnetic linkage of A2 phases；
Fig. 7 be mover electric angle be 180 ° when armature winding in magnetic linkage；A is the magnetic linkage of A1 phases, and b is the magnetic of A2 phases
Chain；
Fig. 8 is lower stator excitation winding excitation direction.
Specific implementation mode
For a kind of single cryogenic magnetic field modulation system, super linear motor, wherein Wehnelt electrode play the inside and outside stator magnet of modulation to the present invention entirely
The effect of field makes that perseverance can be generated with the mover interaction that corresponding harmonic wave be closed on this layer of air gap in each layer air gap
Fixed effective output torque.It is fundamental wave that internal layer air-gap field content is maximum for lower stator, before modulating, after ovennodulation,
Amplitude is obtained in outer layer air-gap field to be apparently higher than the overtone orders of other harmonic waves (i.e. the unmodulated preceding content of outer layer air-gap field is most
Big fundamental wave number), the magnetic field collective effect that then harmonic wave is generated with upper stator generates torque.
As shown in Fig. 1, the present invention is a kind of complete super linear motor, which includes long stator up and down 2 and 3 Hes of salient pole
Mover 1；Mover 1 and upper and lower stator 2,3 are all made of D23 material punchings and are overrided to form；Winding includes 4 He of single-layer ac armature winding
Single layer DC excitation winding 5, the winding is made of Bi-2223 high temperature superconducting materias；One ring type cryostat is using Du
Watt, stator up and down can be wrapped in and moved together.
In order to install armature winding 4 and Exciting Windings for Transverse Differential Protection 5, stator is divide into upper part and lower part by decision, to expand groove face
Product.The mounting means of alternating supercurrent armature winding 4 is as shown in Fig. 2, alternating supercurrent armature winding 4 is mounted on upper stator in the figure
2。
The mounting means of direct supercurrent Exciting Windings for Transverse Differential Protection 5 is as shown in figure 3, direct supercurrent Exciting Windings for Transverse Differential Protection is mounted on down in the figure
Stator.No matter alternating supercurrent armature winding 4 or DC excitation winding 5, they are by the way of racetrack, outside racetrack
Insulation and heat sink material have been wrapped up, has been contacted between superconductor being prevented impaired and winding, improves stability.
In order to make the magnetic flux of exchange armature winding 4 allow hand over, need to be passed through correctly constant excitation electricity in Exciting Windings for Transverse Differential Protection 5
Stream.Fig. 4 gives the excitation mode of such complete super motor excitation winding 5, under encouraging herein, the flow direction phase of Adjacent salient poles tooth
Instead.With A1, for A2 armature winding, when mover is run to Fig. 4 in the complete super linear motor, exchange armature winding A1, A2's
Flow direction all upwards and is maximum value, and the sum of the two magnetic flux is positive maximum value；When in the complete super linear motor mover run to
When Fig. 5, for the flow direction of exchange armature winding A1, A2 on the contrary, equal in magnitude, the sum of the two magnetic flux is 0；When complete super linear motor
When middle mover is run to Fig. 6, the flow direction of exchange armature winding A1, A2 all downwards and are minimum value, and the sum of the two magnetic flux is
Negative maximum value；Positive and negative switching just has occurred in the flow direction of exchange armature winding 4 in this way, which is suitable for rail traffic
Field.
In practical applications, due to there is air gap between long stator and mover, the foreign matters such as iron filings is prevented, dust cover, stator can be used
Overheat causes demagnetization etc., can use water circulating cooling.Due to the combination of long stator and short mover 12/10, the two is manufactured into difference
Length realize the high efficiency of motor, wide range speed control model to ensure that the coupling in required stroke range between the two remains unchanged
It encloses.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that：Not
In the case of being detached from the principle of the present invention and objective a variety of change, modification, replacement and modification can be carried out to these embodiments, this
The range of invention is limited by claim and its equivalent.
Claims (5)
1. a kind of list cryostat superconducting linear motor, which is characterized in that including upper and lower two stators, a mover (1), two
Group winding, a single cryostat；
The stator is divided into two parts, upper stator (2) and lower stator (3), and upper stator (2) and lower stator (3) are all 12 pole of three-phase
And per extremely corresponding to, mover (1) number is 10；The armature winding (4) is distributed in stator (2), Exciting Windings for Transverse Differential Protection (5) distribution
In lower stator (3), adjacent windings interval electrical angle formula is θ=(2 π Nr)/Ns+ π, wherein mover number of poles Nr=10, stator poles
Ns=12 event θ=120 ゜；The armature winding (4) and Exciting Windings for Transverse Differential Protection (5) are all high temperature superconducting materia；Lead in Exciting Windings for Transverse Differential Protection (5)
Enter constant exciting current；The list cryostat is wrapped in stator, design up and down and circularizes.
2. a kind of single cryostat superconducting linear motor according to claim 1, which is characterized in that mover cross section is
Trapezoidal, the ratio of mover bottom and mover pole span is 0.7, and the ratio of bottom and mover pole span is 0.67 on mover.
3. a kind of single cryostat superconducting linear motor according to claim 1, which is characterized in that add Wehnelt electrode
(6), i.e., the upper stator (2) and lower stator (3) tooth boots are thickeied, by opening the sulculus of certain depth on tooth boots, is formed
The wide small tooth being equally spaced, these teeth act as adjustable magnetic ring in magnetic gear.
4. a kind of single cryostat superconducting linear motor according to claim 1, which is characterized in that armature winding and encourage
Magnetic winding is racetrack, and the material used in two kinds of windings is y ba cu o compound or Bi-2223.
5. a kind of single cryostat superconducting linear motor according to claim 1, which is characterized in that the list low temperature is protected
Holder uses Dewar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810223562.0A CN108390536A (en) | 2018-03-19 | 2018-03-19 | A kind of list cryostat superconducting linear motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810223562.0A CN108390536A (en) | 2018-03-19 | 2018-03-19 | A kind of list cryostat superconducting linear motor |
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| Publication Number | Publication Date |
|---|---|
| CN108390536A true CN108390536A (en) | 2018-08-10 |
Family
ID=63067906
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810223562.0A Pending CN108390536A (en) | 2018-03-19 | 2018-03-19 | A kind of list cryostat superconducting linear motor |
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| Country | Link |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109888939A (en) * | 2019-02-11 | 2019-06-14 | 邱东平 | A kind of two-stage magnetic pole improves the method and straight hair motor of flux change frequency |
| CN114050703A (en) * | 2021-11-17 | 2022-02-15 | 苏州维嘉科技股份有限公司 | Linear motor |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020130630A1 (en) * | 2001-03-19 | 2002-09-19 | Canon Kabushiki Kaisha | Linear pulse motor, stage apparatus, and exposure apparatus |
| CN104201859A (en) * | 2014-08-28 | 2014-12-10 | 浙江大学 | Asymmetrical double-side type mixed excitation linear synchronous motor |
| CN103259383B (en) * | 2013-05-10 | 2015-12-30 | 江苏大学 | A kind of complete super linear electric motors of single cryostat |
-
2018
- 2018-03-19 CN CN201810223562.0A patent/CN108390536A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020130630A1 (en) * | 2001-03-19 | 2002-09-19 | Canon Kabushiki Kaisha | Linear pulse motor, stage apparatus, and exposure apparatus |
| CN103259383B (en) * | 2013-05-10 | 2015-12-30 | 江苏大学 | A kind of complete super linear electric motors of single cryostat |
| CN104201859A (en) * | 2014-08-28 | 2014-12-10 | 浙江大学 | Asymmetrical double-side type mixed excitation linear synchronous motor |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109888939A (en) * | 2019-02-11 | 2019-06-14 | 邱东平 | A kind of two-stage magnetic pole improves the method and straight hair motor of flux change frequency |
| CN114050703A (en) * | 2021-11-17 | 2022-02-15 | 苏州维嘉科技股份有限公司 | Linear motor |
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Application publication date: 20180810 |